Patent GB-190422413-A (GB)
Title: Improvements in Rotary Pneumatic Machines for Turning Bags and the like Inside Out.
Inventor: LESTER WILLIAM HENRY
Filed: 1904-10-18
Granted: 1905-01-19
Abstract: 22,413. Lester, W. H. Oct. 18. Turning sewn articles inside out. -Relates to a rotary pneumatic machine for turning bags and the like inside out. The mouth of the bag to be turned is placed, by the operator, in front of the diamondshaped opening 102 in the casing 92, Figs. 3 and 4. The bag is pressed against the supports 131, 132, Fig. 8, the hands lying in recesses 133, 134 in the front plate 100. The mouth of the bag is opened by the fingers 103, 104 secured to the rods 105, 106, which are geared together by the wheels 109, 110 and are rotated in opposite directions, against the action of the spring 114, by the lever 121 operated by the adjustable cam 117, secured to the rotating drum 29. Air, drawn by an air pump through the passage 31 in the hollow drum 29 and thence through the pipe 20, sucks the bag inwards from the opening 102, thus turning it inside out. To open and close the port 21 in the pipe 20 quickly, the pipe is rotatably mounted on rollers 42 and is adapted to be oscillated about its axis by the adjustable arm 127, operated by the cam-surface 123, 124. When the bag is completely turned, its closed end projects slightly within the passage 31. The end of the bag is thus caught by the .rotating wall 30 and is pressed by it against the rotating delivery drum 61 which, like the drum 29, is driven from the shaft 89, and forms an airtight joint with the casing 92. The air passage 63 then comes opposite the suction port 66 in the pipe 65, and the bag, which is then released by the operator, is drawn against the grating 64, and is thus caused to adhere to the drum 61. The bag then passes between the drums 29, 61, which are arranged to allow them to be forced slightly apart by pivotally mounting the drum 61 at 74 and inserting springs 79 to press the arms 78 upwards against stops 80. When the bag reaches the lower side of the drum 61, the suction port 66 is closed, and the bag is stripped from the drum by the stripper 137 and guide-plate 138 and falls upon the receiver 136. Fig. 12 shows the arrangement of suction pipes which is preferably used. The pipe 20 is pivotally mounted in the elbow-pieces 46, 47 which connect it to the side pieces 48, 49 leading to the pipe 53 which leads to the fan. The pipe 65 is pivoted in the elbow-piece 68 connected to the sliding piece 69, which forms a telescopic coupling with the branch pipe 70 leading from the pipe 48. To adapt the machine for turning longer and broader bags, the front section 93 of the casing 92 is replaced by a longer one having a larger opening 102, and the position of the suction port 66 with respect to the air passage 63 is adjusted by turning the pipe 65 by means of the arm 86 secured by the bolt 88. The longitudinal position of the fingers 103, 104 on the rods 105, 106 is also adjusted. Instead of having a suction fan connected to the pipe 53, a current af air may be forced into the receiving-end 93 of the casing 92. Both drums 29, 61 may be yieldingly mounted so that they may recede from each other. The delivery drum 61 and the delivery arrangements connected with it may be used with other bagturning machines.